asterisk users - Apr 2005 - Confused on G723 and G729

I see that G723 and G729 require a license to be used, or can be used
(in the case of G723) in pass-through mode only.

My question is.. if my voip terminator supports G723 and G729 only, do
I still need a license?  Or is that considered "pass-through"?  If so,
do I need to do anything special to get it to work?

I'm also a litle confused about why G723 can do pass-through but can't
do voicemail access?  What's the difference, or the logic behind this?

> -----Original Message-----
> From: asterisk-users-bounces@lists.digium.com 
> [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Matt
> Sent: Wednesday, April 27, 2005 9:43 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: [Asterisk-Users] Confused on G723 and G729
> 
> My question is.. if my voip terminator supports G723 and G729 
> only, do I still need a license? 
> Or is that considered 
> "pass-through"?  If so, do I need to do anything special to 
> get it to work?
It is pass-through if both end points are using G.729.
You need a G.729 license for every instance where a G.729 stream is
encoded or decoded on your box. If you connect G.729 endpoints together,
this isn't happening so no license is needed. 

Same goes for G.723.
> 
> I'm also a litle confused about why G723 can do pass-through 
> but can't do voicemail access?
There is no G.723 license available for asterisk, ergo no way to
transcode the voicemail and other promts into that format.

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